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Re: [Qemu-devel] [RFC PATCH 25/34] scsi: add Hyper-V/VMBus SCSI controll


From: Denis V. Lunev
Subject: Re: [Qemu-devel] [RFC PATCH 25/34] scsi: add Hyper-V/VMBus SCSI controller
Date: Wed, 7 Feb 2018 14:25:05 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 02/07/2018 02:11 PM, Paolo Bonzini wrote:
> On 06/02/2018 21:30, Roman Kagan wrote:
>> +    blk_io_plug(d->conf.blk);
>> +    if (scsi_req_enqueue(sreq)) {
>> +        scsi_req_continue(sreq);
>> +    }
>> +    blk_io_unplug(d->conf.blk);
> Is plug/unplug really useful?
>
> Paolo
good point. here - no. plug/unplug should be moved to upper
layer, where we process all requests. Plug/Unplug should
cover all currently available bits.

Den



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